# Potential XSS vulnerability in jQuery

Advisory record · `GHSA-jpcq-cgw6-v4j6`

- **Identifiers:** `GHSA-jpcq-cgw6-v4j6` · `BIT-drupal-2020-11023` · `CVE-2020-11023` · `PKSA-jqsz-ykjr-qncb`
- **State:** Confirmed
- **Severity:** CVSS 6.9 Medium
- **Critical:** Yes: KEV
- **Weakness (CWE):** [CWE-79](https://cwe.mitre.org/data/definitions/79.html)
- **Tags:** [Cross-site scripting (XSS)](https://agentprime.io/advisories/tag/xss.md)
- **Published:** 29 Apr 2020
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 29 Apr 2020, 22:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- In CISA’s KEV catalogue since 23 Jan 2025: it is known to be exploited.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `jquery` (npm): affected `>=1.0.3, <3.5.0`; fixed in `3.5.0`
- `jquery-rails` (RubyGems): affected `<4.4.0`; fixed in `4.4.0`
- `jQuery` (NuGet): affected `>=1.0.3, <3.5.0`; fixed in `3.5.0`
- `org.webjars.npm:jquery` (Maven): affected `>=1.0.3, <3.5.0`; fixed in `3.5.0`
- `components/jquery` (Packagist): affected `>=1.0.3, <3.5.0`; fixed in `3.5.0`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.9 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Listed since 23 Jan 2025: known to be exploited.
- **EPSS:** 0.85, the 99th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 29 Apr 2020, 19:45 UTC: [Published by the maintainers as a GitHub repository advisory](https://github.com/jquery/jquery/security/advisories/GHSA-jpcq-cgw6-v4j6)

## Sources

- [GitHub Advisory Database: GHSA-jpcq-cgw6-v4j6](https://github.com/advisories/GHSA-jpcq-cgw6-v4j6)
- [OSV: GHSA-jpcq-cgw6-v4j6](https://osv.dev/vulnerability/GHSA-jpcq-cgw6-v4j6)
- <https://github.com/jquery/jquery/security/advisories/GHSA-jpcq-cgw6-v4j6>
- <https://nvd.nist.gov/vuln/detail/CVE-2020-11023>
- <https://github.com/jquery/jquery/commit/1d61fd9407e6fbe82fe55cb0b938307aa0791f77>
- <https://lists.apache.org/thread.html/rda99599896c3667f2cc9e9d34c7b6ef5d2bbed1f4801e1d75a2b0679@%3Ccommits.nifi.apache.org%3E>
- <https://lists.apache.org/thread.html/re4ae96fa5c1a2fe71ccbb7b7ac1538bd0cb677be270a2bf6e2f8d108%40%3Cissues.flink.apache.org%3E>
- <https://lists.apache.org/thread.html/re4ae96fa5c1a2fe71ccbb7b7ac1538bd0cb677be270a2bf6e2f8d108@%3Cissues.flink.apache.org%3E>
- <https://lists.apache.org/thread.html/rede9cfaa756e050a3d83045008f84a62802fc68c17f2b4eabeaae5e4%40%3Cissues.flink.apache.org%3E>
- <https://lists.apache.org/thread.html/rede9cfaa756e050a3d83045008f84a62802fc68c17f2b4eabeaae5e4@%3Cissues.flink.apache.org%3E>
- <https://lists.apache.org/thread.html/ree3bd8ddb23df5fa4e372d11c226830ea3650056b1059f3965b3fce2%40%3Cissues.flink.apache.org%3E>
- <https://lists.apache.org/thread.html/ree3bd8ddb23df5fa4e372d11c226830ea3650056b1059f3965b3fce2@%3Cissues.flink.apache.org%3E>
- <https://lists.apache.org/thread.html/rf0f8939596081d84be1ae6a91d6248b96a02d8388898c372ac807817%40%3Cdev.felix.apache.org%3E>
- <https://lists.apache.org/thread.html/rf0f8939596081d84be1ae6a91d6248b96a02d8388898c372ac807817@%3Cdev.felix.apache.org%3E>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-jpcq-cgw6-v4j6>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-jpcq-cgw6-v4j6/>. Everything for agents: <https://agentprime.io/llms.txt>.